Chapter 1: How to Use the Design Guide

1.1. Overview.. 1

1.2. Chapter Summaries. 1

 

1.1. Overview

The Control System Design Guide (Design Guide) provides methods and recommendations for the control system design process and control point selection and installation. Control systems are often the most problematic system in a building. A good design process that takes into account maintenance, operation, and commissioning can lead to a smoothly operating and efficient building. To this end, the Design Guide provides a toolbox of templates for improving control system design and specification.

HVAC designers are the primary audience for the Design Guide. The control design process it presents will help produce well-designed control systems that achieve efficient and robust operation. The spreadsheet examples for control valve schedules, damper schedules, and points lists can streamline the use of the control system design concepts set forth in the Design Guide by providing convenient starting points from which designers can build.

Although each reader brings their own unique questions to the text, the Design Guide contains information that designers, commissioning providers, operators, and owners will find useful.

1.2. Chapter Summaries

Chapter 2 Control System Design Process A birdís eye view of the design process details the different demands placed on designers, contractors, and owners. Topics covered include the importance of system diagrams, detailed sequences of operation, points lists, and detailed specifications. Spreadsheet templates are provided to streamline the design and specification process for control points, valves, and dampers. Completed spreadsheet templates are also included as examples.

Chapter 3 Selection and Installation of Control and Monitoring Points The guidelines will help designers make decisions about control and monitoring point selection to improve efficiency and control over the life of the building. Detailed discussion of common sources of measurement error helps designers avoid these problems in their design and helps commissioning providers interpret inaccuracies in field measurements. Recommendations for selecting and installing temperature, humidity, pressure, and flow sensor technologies guide both designers and commissioning providers through the ever-changing world of sensors. Recommendations for interfacing points to the building automation system (BAS) includes discussion of point naming conventions, settings, alarms, display graphics, and trending.

Chapter 4 System Configurations This chapter describes twelve common air handling system configurations and recommends the monitoring and control point requirements associated with each configuration. These points lists spreadsheets can be used by designers and commissioning providers as a starting point on their own projects.